|Incumbent|Reason for Vacancy|Appointed Successor|Date of Appointment|Elected Successor|Date of Election|
|---|---|---|---|---|---|
|L. B. Lindsay|Disqualified, never took office|Henry E. Prickett|November 19, 1867|Thomas B. Hart|January 1868|
|John Hailey|Never took office|Charles Himrod|July 10, 1871|George H. Twitchell|July 8, 1872|
|Sol Hasbrouck|Resigned November 5, 1885|James W. Huston|December 28, 1885|Peter J. Pefley|July 1887|
|Harry Fritchman|Resigned May 25, 1912|Arthur Hodges|May 25, 1912|Arthur Hodges|April 1, 1913|
|J. W. Robinson|Recalled June 1, 1916|S. H. Hays|June 6, 1916|S. H. Hays|April 1917|
|Herbert F. Lemp|Died May 6, 1927|Walter F. Hansen|May 6, 1927|James P. Pope|April 1929|
|James P. Pope|Resigned February 13, 1933|Ross Cady|February 13, 1933|J. J. McCue|April 1933|
|Byron E. Hyatt|Died November 11, 1936|J. L. Edlefsen|November 11, 1936|J. L. Edlefsen|April 1937|
|H. W. Whillock|Resigned May 11, 1942|Austin Walker|May 11, 1942|Austin Walker|April 1943|
|Austin Walker Sam S. Griffin|Died October 31, 1945 Resigned February 25, 1946|Sam S. Griffin H. W. Whillock|October 31, 1945 February 25, 1946|Potter P. Howard|April 1947|
|Dirk Kempthorne|Resigned January 5, 1993|H. Brent Coles|January 5, 1993|H. Brent Coles|November 1993|
|H. Brent Coles|Resigned February 15, 2003|Carolyn Terteling-Payne|February 18, 2003|David H. Bieter|November 2003|

Question: how many never took office?
Answer: 2